Fire extinguisher container



Jan. 15, 1935. C H Mms FIRE EXTINGUI SHER CONTAINER Filed Aug. 11', 195o Patented Jan. l5, 1935 UNITED STATES FIRE EXTINGUISHER CONTAINER Charles H. Meigs, New

York, N. Y., assignor to Du-Gas Fire Extinguisher Corporation, New Yorlr, N. Y., a corporation 'of Delaware Application August 1 1,

Claims.

My invention relates to a fire extinguisher and particularly to a fire extinguisher container of the type using a dry chemical and a gas under pressure for delivering the chemical to the point of conflagration.

It is an object of this invention to provide a re extinguisher including a receptacle for tho dry chemical and means for mounting a gas cyl- 'inder within the dry chemical receptacle in such a manner that handling of the apparatus is greatly facilitated. `1

It is a further important object ofl this invention to provide an improved construction of flre extinguisher of the portable type.

Other and further important objects of this invention will become apparent from the following description and appended claims.

The drawing is a longitudinal sectional view of a fire extinguisher embodying the principles of my invention, with parts in elevation.

As shown on the drawing:

The reference numeral 1 indicates as a whole a receptacle for containing the dry powder or chemical used for extinguishing the lire. The receptacle 1 comprises a cylindrical body portion 2 and a top portion 3 which is suitably secured to the body portion.

The body portion 2 is provided with an integral internally directed crease or flange 4 upon which a conical hopper 5 is engaged. The hopper 5 has an upwardly extending cylindrical marginal portion 6 which is suitably secured and sealed to the inner wall of the body portion 2.

The hopper 5 has a lower cylindrical portion 7 which is bent inwardly about its lower edge 8 to provide a seat for an internally threaded outlet nipple 9 secured thereon. Threaded in the outlet nipple 9 is an outlet nut 10 which has a flange 11 to engage a flange 12 on an outlet elbow 13 so that upstanding integral portions 14 of the elbow may be forced into a snug t with the lower terminal face of the outlet nipple 9.

The outlet elbow 13 terminates, at one end, in an integral T-shaped member 15 of which the upstanding portions 14, already mentioned, are a part and define the inlet thereof communicating with the hopper 5.

A dependent offset flange 16 is integrally formed on the T-shaped member 15, and said flange is `internally threaded to receive a filler cap t17 threaded therein, so that the container may be filled with powder at its lower end.

A hose 18, having a conventional nozzle 19 and discharge-control valve means 20 is suitably secured to the outlet elbow 13.

1930, serial No. 474,323

(ci. 16s-s1) A neck-ring 21 comprising a member having a cylindrical externallyl threaded portion and an out-turned flanged portion is suitably secured, about its flanged portion, inside the top-domeshaped portion 3 of the container.

Threaded on the neck-ring 21 is a dished cover member 22 having upstanding integral spaced arms 23 connected together by an integral guard ring 24. An upwardly extending and internally threaded tubular member 25 formed integral with the dished cover receives a bushing 26 which has an internally and externally threaded enlarged portion 27 projecting into the container, and which provides an abutting surface for tight engagement against the dished cover, as indicat:d by the numeral 28.

A cartridge holder 29 is threaded on the enlarged portion of the bushing 26, said holder 29 carries a gas-filled cartridge 30, and also a pipe 31 which leads down into the hopper 5 where it is curved to conform to the curvature of the hopper to deliver gas substantially tangentially and with a downward inclination, with the nozzle end of the pipe 31 opening slightly upwardly, as at 36.

The cartridge holder is recessed at 32 and internally threaded to house the end of the cartridge threaded therein, said recess 32 communicates with a conduit passage 33 formed in the holder communicating with the pipe 31. The outlet end of the cartridge'30 is formed with a wall of reduced area and of less thickness than the walls elsewhere in order that it may be readily punctured by a piercing tool when it is desired to allow gas to escape from the cartridge. This wall is pierced by the sharp end of a spindle 34 threaded in the bushing 26 and turned by means of a wheel 35 connected thereto. Said spindle 34 is grooved as at 37 to form a passage for the proper escape of the gas into the passage 33.

It will be evident that byv simply unscrewing the cover 22 the powder impelling equipment is removable as a unit for inspection or repair. The construction I have disclosed has the added advantage that a new powder impelling unit may be quickly placed in the container to replace a defective unit. It also offers the advantage that the powder impelling means may be positioned' in the container for storage or shipment, and when the container is placed in service it can then be fllled'with dry powder through the bottom after removing the ller cap 1'7. Y It is obvious that when the container is shipped without powder it will be relatively light, with consequent low shipping charges, and with less likelihood of its being damaged in handling.

The T-shaped member provides a filling funnel. The conical hopper 5 serves to bring the powder into the path of the stream of gas issuing from the nozzle end 36 when the device is in use.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a re extinguisher container having a discharge outlet, a nipple secured to the container defining the outlet of the container, a anged passaged member engaging said nipple and having an outlet elbow formed integral therewith, a nut threadedly engaging the interior of said nipple and engaging said anged member to secure the nipple and the anged member together, and a plate removably secured on said flanged member in spaced alined relation with said nipple whereby said container may be filled with a dry powder through said nipple.

2. In a re extinguisher container, a conical hopper positioned in said container at one end thereof, an outlet nipple secured on one end of said hopper, a flanged nut threaded within said nipple, a T-shaped passaged member having an inwardly directed flange engaging between the ange of said nut and said nipple whereby said T-shaped passaged Vmember may be drawn into tight engagement with said nipple by said nut, said T-shaped member having an outlet elbow formed integral therewith for connection to a hose, and a cap threaded in said T-shaped member in alined relation with said nipple.

3. A fire extinguisher container comprising an elongated casing having an opening at each end, removable closure means on one end of said casing, powder-impelling means mounted on said closure means and within the container and removable therewith as a unit, closure means mounted on the other end of said container arranged so that the container may be filled with dry powder from that end, said last named closure means including a passaged member having a hose and valve connected thereto, and a ller cap removably secured on said passaged member and positioned in substantial alinement with the openings of said casing.

4. A re extinguisher device comprising an elongated casing provided with an opening at its upper end provided with a removable closure and having a hopper shaped bottom member provided with a opening at the lower end thereof, closure means for said hopper opening including a ller cap whereby said container may be lled with a. re extinguishing powder through said opening, said closure means including a passaged member having a hose and valve connected thereto, powder impelling means including a gas lled cartridge extending into said upper opening and positioned within said elongated casing andl a manually operable piercing member for said cartridge projecting above said upper opening for operation of said powder impelling means.

5. A re extinguisher device comprising an elongated casing with an opening at its upper end provided with a closure and having a hopper shaped bottom member provided with an opening at the lower end thereof, closure means for said hopper opening including a ller cap whereby said container may be lled with a re extinguishing powder through said opening, said closure means including a passaged member having a hose and valve connected thereto, powder impelling means including a gas filled cartridge extending into said upper opening and positioned within said elongated casing and a manually operable actuating member for said cartridge projecting above said upper opening for operation of said powder impelling means.

CHARLES H. MEIGS. 

